Comment 1 for bug 1747713

looks like this is just an issue with ansible 2.4.2, once I upgraded to 2.4.3 everything seems to be fine.

root@cloudnull-ubuntu-nspawn:/opt/openstack-ansible/playbooks# ansible --version
Variable files: "-e @/etc/openstack_deploy/user_secrets.yml -e @/etc/openstack_deploy/user_variables.yml "
ansible 2.4.3.0
  config file = None
  configured module search path = ['/etc/ansible/roles/plugins/library']
  ansible python module location = /opt/ansible-runtime/lib/python3.5/site-packages/ansible
  executable location = /opt/ansible-runtime/bin/ansible
  python version = 3.5.2 (default, Nov 23 2017, 16:37:01) [GCC 5.4.0 20160609]